Last night, I lost my betta Moped to what I assumed was an internal bacterial infection, but now I'm not 100% sure as to the cause of death. Something weird happened to his body overnight (couldn't bury til morning). It lost its color. Here is when he was alive and healthy.
On Thursday, late evening, I noticed Moped's belly was paling, he wasn't eating, and he was blowing bubbles from his gills. On Friday morning, I put him in 3 tsps of epsom salt and Maracyn II. Late Friday night, he passed away - he had become pineconed by then although he was not bloated. Because it was dark outside, I put him in a cup awaiting burial. When I happened to glance at the cup about an hour after his death, I noticed this:
This morning, when I went to get his body for burial, I noticed this:
I've never had this happen to a body before and now I'm concerned about the cause of his death. Does it seem like acute onset columnaris? Once he became ill, I don't believe I cross-contaminated with my other bettas but I'm not 100% sure. Is there anything I can do to protect/prevent this from happening to them? Also, he was in a divided tank until he became mopey and was removed to his own quarters - it was after this that I noticed his belly paling.
If anyone has any advice or insight, it would be much appreciated. I don't want my other bettas falling victim to this fast-moving disease.